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The earth's radius is 6.37×10^6m; it rotates once every 24 hours. What is the earth's angular speed? Viewed from a point above the north pole, is the angular velocity positive or negative?

The earth's radius is 6.37×10^6m; it rotates once every 24 hours. What is the earth's angular speed? Viewed from a point above the north pole, is the angular velocity positive or negative?

The answer is :

7.3 x 10^-5 rad/sec
positive

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